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Finding the Fourth Proportional to 965,203.60, 1,447,805.40 and 858,915.40

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Solution

The fourth proportional to 965,203.60, 1,447,805.40 and 858,915.40 is: 1,288,373.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    965,203.60 : 1,447,805.40 = 858,915.40 : x
  2. Step 2: Convert to fraction form
    965,203.60/1,447,805.40 = 858,915.40/x
  3. Step 3: Cross multiply
    965,203.60x = 1,447,805.40 × 858,915.40
  4. Step 4: Simplify right side
    965,203.60x = 1,243,542,354,263.16
  5. Step 5: Solve for x
    x = 1,243,542,354,263.16/965,203.60
  6. Step 6: Final answer
    x = 1,288,373.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.